1 files changed, 139 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/nvram.h b/arch/powerpc/include/asm/nvram.h
new file mode 100644
index 00000000000..efde5ac82f7
--- /dev/null
+++ b/arch/powerpc/include/asm/nvram.h
@@ -0,0 +1,139 @@
+/*
+ * NVRAM definitions and access functions.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_POWERPC_NVRAM_H
+#define _ASM_POWERPC_NVRAM_H
+
+#include <linux/errno.h>
+
+#define NVRW_CNT 0x20
+#define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */
+#define NVRAM_BLOCK_LEN 16
+#define NVRAM_MAX_REQ (2080/NVRAM_BLOCK_LEN)
+#define NVRAM_MIN_REQ (1056/NVRAM_BLOCK_LEN)
+
+#define NVRAM_AS0  0x74
+#define NVRAM_AS1  0x75
+#define NVRAM_DATA 0x77
+
+
+/* RTC Offsets */
+
+#define MOTO_RTC_SECONDS        0x1FF9
+#define MOTO_RTC_MINUTES        0x1FFA
+#define MOTO_RTC_HOURS          0x1FFB
+#define MOTO_RTC_DAY_OF_WEEK    0x1FFC
+#define MOTO_RTC_DAY_OF_MONTH   0x1FFD
+#define MOTO_RTC_MONTH          0x1FFE
+#define MOTO_RTC_YEAR           0x1FFF
+#define MOTO_RTC_CONTROLA       0x1FF8
+#define MOTO_RTC_CONTROLB       0x1FF9
+
+#define NVRAM_SIG_SP    0x02    /* support processor */
+#define NVRAM_SIG_OF    0x50    /* open firmware config */
+#define NVRAM_SIG_FW    0x51    /* general firmware */
+#define NVRAM_SIG_HW    0x52    /* hardware (VPD) */
+#define NVRAM_SIG_FLIP  0x5a    /* Apple flip/flop header */
+#define NVRAM_SIG_APPL  0x5f    /* Apple "system" (???) */
+#define NVRAM_SIG_SYS   0x70    /* system env vars */
+#define NVRAM_SIG_CFG   0x71    /* config data */
+#define NVRAM_SIG_ELOG  0x72    /* error log */
+#define NVRAM_SIG_VEND  0x7e    /* vendor defined */
+#define NVRAM_SIG_FREE  0x7f    /* Free space */
+#define NVRAM_SIG_OS    0xa0    /* OS defined */
+#define NVRAM_SIG_PANIC 0xa1    /* Apple OSX "panic" */
+
+/* If change this size, then change the size of NVNAME_LEN */
+struct nvram_header {
+        unsigned char signature;
+        unsigned char checksum;
+        unsigned short length;
+        char name[12];
+};
+
+#ifdef __KERNEL__
+
+#include <linux/list.h>
+
+struct nvram_partition {
+        struct list_head partition;
+        struct nvram_header header;
+        unsigned int index;
+};
+
+
+extern int nvram_write_error_log(char * buff, int length,
+                                         unsigned int err_type, unsigned int err_seq);
+extern int nvram_read_error_log(char * buff, int length,
+                                         unsigned int * err_type, unsigned int *err_seq);
+extern int nvram_clear_error_log(void);
+extern struct nvram_partition *nvram_find_partition(int sig, const char *name);
+
+extern int pSeries_nvram_init(void);
+
+#ifdef CONFIG_MMIO_NVRAM
+extern int mmio_nvram_init(void);
+#else
+static inline int mmio_nvram_init(void)
+{
+        return -ENODEV;
+}
+#endif
+
+#endif /* __KERNEL__ */
+
+/* PowerMac specific nvram stuffs */
+
+enum {
+        pmac_nvram_OF,          /* Open Firmware partition */
+        pmac_nvram_XPRAM,       /* MacOS XPRAM partition */
+        pmac_nvram_NR           /* MacOS Name Registry partition */
+};
+
+#ifdef __KERNEL__
+/* Return partition offset in nvram */
+extern int      pmac_get_partition(int partition);
+
+/* Direct access to XPRAM on PowerMacs */
+extern u8       pmac_xpram_read(int xpaddr);
+extern void     pmac_xpram_write(int xpaddr, u8 data);
+
+/* Synchronize NVRAM */
+extern void     nvram_sync(void);
+
+/* Normal access to NVRAM */
+extern unsigned char nvram_read_byte(int i);
+extern void nvram_write_byte(unsigned char c, int i);
+#endif
+
+/* Some offsets in XPRAM */
+#define PMAC_XPRAM_MACHINE_LOC  0xe4
+#define PMAC_XPRAM_SOUND_VOLUME 0x08
+
+/* Machine location structure in PowerMac XPRAM */
+struct pmac_machine_location {
+        unsigned int    latitude;       /* 2+30 bit Fractional number */
+        unsigned int    longitude;      /* 2+30 bit Fractional number */
+        unsigned int    delta;          /* mix of GMT delta and DLS */
+};
+
+/*
+ * /dev/nvram ioctls
+ *
+ * Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
+ * definitely obsolete. Do not use it if you can avoid it
+ */
+
+#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
+                                _IOWR('p', 0x40, int)
+
+#define IOC_NVRAM_GET_OFFSET    _IOWR('p', 0x42, int)   /* Get NVRAM partition offset */
+#define IOC_NVRAM_SYNC          _IO('p', 0x43)          /* Sync NVRAM image */
+
+#endif /* _ASM_POWERPC_NVRAM_H */